{"product_id":"xdp-performance-valve-springs-retainer-kit-xd386","title":"XDP Performance Valve Springs \u0026 Retainer Kit XD386","description":"XDP Model XD386\u003cbr\u003e\u003cbr\u003e\u003cp\u003e \u003c\/p\u003e\n\u003cdiv\u003eThe XDP Performance Valve Springs \u0026amp; Retainer Kit XD386 are a perfect upgrade for your modified 2001-2016 GM 6.6L Duramax. Camshaft upgrades and other modifications that increase boost require more valve control. The XDP Performance Valve Spring feature a conical design for better valve control than a standard straight spring. The conical design also allows for smaller and lighter spring retainers. Each spring undergoes a stress relief process and is computer load mapped, to ensure quality and long-term reliability. Each  spring is matched within 1 lb of seat pressure to ensure consistency. Sold as a complete set with valve springs, retainers, and locks. Each kit is backed by XDP's 1-year unlimited mileage warranty.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch5\u003eFEATURES: \u003c\/h5\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003e125 Lb. Seat Pressure\u003c\/li\u003e\n\u003cli\u003eConical Spring Design \u003c\/li\u003e\n\u003cli\u003ePerformance Valve Spring Kit\u003c\/li\u003e\n\u003cli\u003eEssential For Elevated Boost Levels \u003c\/li\u003e\n\u003cli\u003eComplete Set (Springs, Locks \u0026amp; Retainers)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eSpecifications:\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003eInstalled Height: 1.610”\u003c\/div\u003e\n\u003cdiv\u003eInstalled Pressure: 125lbs \u003c\/div\u003e\n\u003cdiv\u003e210lbs @ 1.110” \u003c\/div\u003e\n\u003cdiv\u003eCoil Bind: 1.050”\u003cbr\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch5\u003eWARRANTY INFO:\u003c\/h5\u003e\n\u003cdiv\u003eProducts manufactured by XDP carry a 2-Year warranty against defects in materials and craftsmanship. The Warranty is Limited to two (2) years from the date of sale and limited solely to the parts contained within the product's kit.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cmp-product-ca_not_legal\"\u003e\n\u003cdiv class=\"h-breaker\"\u003e\u003cbr\u003e\u003c\/div\u003e\nNot available for sale in the state of California \u003cimg alt=\"Not available for sale in the state of California.\" src=\"https:\/\/www.xtremediesel.com\/themes\/xdp\/images\/no_cali.png\"\u003e \u003ca data-hook=\"ca-emissions\" class=\"color--primary\"\u003eClick here to read Emissions Notice\u003c\/a\u003e.\u003c\/div\u003e","brand":"Powerhouse Diesel","offers":[{"title":"Default Title","offer_id":54498238365971,"sku":"XD386","price":696.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0721\/0218\/3187\/files\/E31144E9-2DEB-44D5-9550-070C8F71EA40.png?v=1785125399","url":"https:\/\/urban3dllc.com\/products\/xdp-performance-valve-springs-retainer-kit-xd386","provider":"Urban 3D","version":"1.0","type":"link"}